Dark Matter: After Dark - Netflix

Editor

Dark Matter: After Dark is a companion show to the SyFy series,
Dark Matter, and airs directly afterwards with behind the scenes
gossip and cast interviews.

Type: Talk Show

Languages: English

Status: Ended

Runtime: 10 minutes

Premier: 2017-06-09

Dark Matter: After Dark - Dark galaxy - Netflix

A dark galaxy is a hypothesized galaxy with no, or very few, stars. They
received their name because they have no visible stars, but may be
detectable if they contain significant amounts of gas. Astronomers have
long theorized the existence of dark galaxies, but there are no
confirmed examples to date. Dark galaxies are distinct from
intergalactic gas clouds caused by galactic tidal interactions, since
these gas clouds do not contain dark matter, so they do not technically
qualify as galaxies. Distinguishing between intergalactic gas clouds and
galaxies is difficult; most candidate dark galaxies turn out to be tidal
gas clouds. The best candidate dark galaxies to date include HI1225+01,
AGC229385, and numerous gas clouds detected in studies of quasars. On 25
August 2016, astronomers reported that Dragonfly 44, an ultra diffuse
galaxy (UDG) with the mass of the Milky Way galaxy, but with nearly no
discernable stars or galactic structure, may be made almost entirely of
dark matter.